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Acoustic wave generating apparatus

  • US 5,616,865 A
  • Filed: 03/22/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 11/24/1993
  • Status: Expired due to Term
First Claim
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1. A discharge device for producing a substantially unidirectional high-energy acoustic wave, comprising:

  • an insulator formed of hard heat-resistant material having a small-diameter axial bore having two ends formed therein, the first end of which is open,a first annular-shaped electrode surrounding and positioned at the open first end of said bore,a second electrode disposed in a position to close the second end of said bore,conductor means for coupling said first and second electrodes across terminals of a source of voltage adapted to be rapidly charged and discharged, andmeans for periodically forming an ionized path in said bore between said first and second electrodes, the ionized path resulting in the rapid electrical discharge of the source of voltage and the production of the substantially unidirectional high-energy acoustic wave from said open first end of said bore.

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